Swimming fin



FIG. 1 is a perspective view of a swimming fin showing my new design;

FIG. 2 is a top plan view thereof;

FIG. 3 is a bottom plan view thereof;

FIG. 4 is a side view of the swimming fin, the opposite side is a mirror image thereto;

FIG. 5 is a front view thereof; and,

FIG. 6 is a rear view thereof. 

The ornamental design for a swimming fin, substantially as shown and described. 